Skip to Main Content
Effects of aspect ratio and crystal orientation of cellulose nanocrystals on properties of poly(vinyl alcohol) composite fibersAuthor(s): Shikha Shrestha; Francisco Montes; Gregory T. Schueneman; James F. Snyder; Jeffrey P. Youngblood
Source: Composites Science and Technology. 167: 482-488.
Publication Series: Scientific Journal (JRNL)
Station: Forest Products Laboratory
Download Publication (1.0 MB)
DescriptionThis work reports a study on the effects of different types and aspect ratios of cellulose nanocrystals (CNCs) on properties of poly (vinyl alcohol) (PVA) composite fibers. CNCs were extracted from wood pulp and cotton and reinforced into PVA to produce fibers by dry-jet-wet spinning. The fibers were collected as-spun and with the first stage drawing up to draw ratio 2. The elastic modulus and tensile strength of the fibers improved with increasing CNC content (5–15 wt. %) at the expense of their strain-to-failure. It was also observed that the mechanical properties of fibers reinforced with cotton CNC were higher than the fibers with wood CNC at the same amount of CNCs due to their higher aspect ratio. The degree of orientation along the spun fiber axis was quantified by 2D X-ray diffraction. As expected, the CNC orientation correlates to the mechanical properties of the fibers. Micromechanical models were used to predict the fiber performance and compare with experimental results. Finally, surface and cross-sectional morphologies of fibers were analyzed by scanning electron microscopy and optical microscopy.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationShrestha, Shikha; Montes, Francisco; Schueneman, Gregory T.; Snyder, James F.; Youngblood, Jeffrey P. 2018. Effects of aspect ratio and crystal orientation of cellulose nanocrystals on properties of poly(vinyl alcohol) composite fibers. Composites Science and Technology. 167: 482-488.
KeywordsCellulose nanocrystals, polymer-matrix reinforced composite fibers, aspect ratios, mechanical properties, micromechanical modeling
- Evaluation of elastic modulus and hardness of crop stalks cell walls by nano-indentation
- Effects of Crystal Orientation on Cellulose Nanocrystals−Cellulose Acetate Nanocomposite Fibers Prepared by Dry Spinning
- A strategy for prediction of the elastic properties of epoxy-cellulose nanocrystal-reinforced fiber networks
XML: View XML